Reorganisation of genetic material or genetic recombination occurs during

Options

A. Metamorphosis
B. Organogenesis
C. Mitosis
D. Meiosis

Answer

To answer the question regarding the reorganization of genetic material or genetic recombination, we need to analyze the options provided: metamorphosis, organogenesis, mitosis, and meiosis.

### Step-by-Step Solution:

1. **Understanding Genetic Recombination**: Genetic recombination refers to the process where genetic material is rearranged during cell division, leading to new combinations of genes. This is crucial for genetic diversity.

2. **Analyzing the Options**:
- **Metamorphosis**: This is a developmental process seen in insects and some animals where they undergo physical changes after birth. It does not involve genetic recombination. Therefore, this option is incorrect.
- **Organogenesis**: This refers to the formation of organs during embryonic development. While it is a vital biological process, it does not involve the reorganization of genetic material. Thus, this option is also incorrect.
- **Mitosis**: This is a type of cell division that results in two identical daughter cells. Mitosis is known as equational division because it maintains the same chromosome number and does not involve genetic recombination. Therefore, this option is incorrect.
- **Meiosis**: This is a specialized type of cell division that reduces the chromosome number by half and is essential for sexual reproduction. During meiosis, particularly in the prophase I stage, a process called crossing over occurs. This is where homologous chromosomes exchange genetic material, leading to genetic recombination. Thus, this option is correct.

3. **Conclusion**: The correct answer to the question of where reorganization of genetic material or genetic recombination occurs is **meiosis**.

### Final Answer:
Reorganization of genetic material or genetic recombination occurs during **meiosis**.

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